Occasional starting difficulty with Digital HP CD box in my D200

MopaR&D said
I was planning to have the battery load tested but I went out today after the truck had been sitting a couple days and the voltage was at 12.6 at the terminals. Then while cranking over the voltage at the battery terminals only dropped to 11.3 which is 2.5 more than the ignition box needs at the ON signal wire. I'm going to start looking in the dash for wiring issues, clearly there's something going on if the voltage is only 9 during cranking in the ignition RUN circuit but over 11 at the battery itself.

Do a voltage drop test. If there is a difference during starting along the circuit the meter will show it.

I haven't had any reason to look at the RTR, but the regular CD box has a seperate direct power source - the run wire is only signal to the relay inside the box. Whereas with a regular points or Chrysler ECU, ignition run is power when running, and ignition start is power when starting.

MopaR&D said
I searched and saw in another thread that the factory electronic ignition has a 0.5-ohm resistor going to the ignition module so that it sees enough voltage during cranking, might that be my solution? If so where would I put the resistor?

No.
The factory resistors worked like this.
During start - power goes to the ECU through the 1/2 resistor.
During run - the power was controlled by a combination of direct (14 Volts) and going through the 5 Ohm resistor.